Suction box for paper machines and the like



De@ Z, 1924. L@ y M. WENZEL. sUCTIoN Box FOR PAPER lMVACHNEs: ANDTHE'LIKE Filed Jan. 9, 1924 ashetsmsheet 1 M. WENZEL. n

' SUCTIONBOX FOR PAPER MACHINEVS AND THE LIKE Filed Jan. 9 y l M.WENZEI. l

sU-GTIQN Box FOR PAPER MACHINES AND THE LIKE 5 ShetsSheet 5 Filled Jan.'9, j MM M WETYEL, F TWLDENSTEN, 'KREIS EITTERFELD, GERMANY.

SUT'E BBK. FR @APER- MACHINS ANI) THE LIKE.

.duplication lled January 9, 1924. Serial No. 685,247.

' To a?? 'whom may eonem.'

'thus preventing" the passage of air Ee it known that l, MAX Wnirznnncitizen of tire State of Saxony, residing :it Rittergut Muldenstein, No.l in Muldenstein, Kreis Bitterfeld, Germsnv, beve invented certain newand useful improvemenm .in Suction Boxes for Paper Machines and thelike, of Wliicb the following is a specification, reference being` bedto the se compenying drawings.

My invention relates to n suetion.-box, in vvl'nicliin tile upperlongitudinal portion thereof are mounted rolls, arranged 'for carryingthe Wire of tbe paper-making maelaine out or frietional Contact with any'port of the box; and-tbe object ofthe rolls thus arranged is to lessentliewear on ,the 'Wire in its passage' over tbe suction-box, andeonsequently to lengthen the life vof said Wire. ln s; device of'tiiiskind it is e problem to nd .n suitable device 'for excluding thepressage of sir between the box and tbe rolls carrying tile Wire. Theobject of tbe presenti-invention is ,to provide e joint between tileimmovable pertso the suction-box and seid rolls, of sucient Width thatwater edliering on seid rolls or slammed up by the' ends of saidrolls'is drawn in tbe joint for the purpose of sealing and rinsing thejoint, -und tbe stopping thereof with pulp.

The invention consists in the features or construction and combinationsof parts hereinefter described and specified in the claims.

ln 'tbe accompanying drawings, illustrating the preferred embodiment.4of my invention:

- Figure l sliows certain parts in a side elevation and other parts in avertical cross-sectional viewof the suction-box: Fig. 2 shows e centralvertical longitudinal sectional viewtliereof, partly in section on linea a and on line I) o," end Figs. 4 'and 5 are vertical cross-sectionalviews on an enlarged scale of detached details,

Similar numerals indicate like parte in tile several views.

Referring more )nzirticulerlyl to the dreivings and more particularly toFigures 1 and 2, wherein lieve shown .my improved suecionfoox, there isin this instance, tlie com- 4ergert-ien et unite. @n eecliside or rtbedeelde beads and tbe travelling Wire.

tbe pepeihm'aking machine, frames l are arranged for supporting tbesuction-box, the snid'rames beiner either e part of the frame of thepaper-making machine or only'a part or tbe suction-box. Between saidframes l, slieets 2 are arranged Willich are .screwed on each end to theframes, tbe said sheets separating tbe singleunits of suction boxes fromtlie suction rooms and tbe atmosphere. `Tile end pieces 8, being securedon tbe frames l, are preferably composed of a. lower part and en upperpart, which are divided in the central plane of tbe Wire-earrying rollsIl, thus to facilitate tbe putting in of said rolls. The end piecesserve to close the space between und around the ends of the Wirecarrying rolls 4l. tbe frame l and the wire 5. The 'closure is createdby means of e joint, left between the surfaces of the Wireearrying rollsand tbe adjcent parte of the end pieces, and Water, which is dammed upbefore tbe ends ,of the rolls, for exemple, by means efe vertical Wallof the end piece, is drawn into tbe joint, in order to eel and', torinse the joint, thus preventingr je pas-- sage of air und the stoppingWitlilpulp. The surface of tbe end pieces opposite tos() the surface oftbe Wire-supporting; rolls, are preferably fitted with a nonrustingmateriel, as, for example, rubber, wood, metal. Suppor-ting bearings 6are preferably secured to the flanges of the end piecesf or tothe`frames l. TbeWire-cerrving rolls flerey mounted in said supportingbearings 'for revolution with tbe traveling,r machine-Wire. Fitted inbetween tbe Wire-carrying rolls 4 and tlie macliinewire 5, near each endof tbe box mounted on and guided in lie end pieces' 3, are movabledeelde heads 7 for adjusting the length of tbe suction part of' the boxto the Width of the Web oi paper 8, which is being made. The uppersurface 95 of these decirle heads is curved to conform to tbe` adjacentbend 'of travelling wire, y

A.which segs-between the Wire-carrying rolls duc to the atmosphere'pressure againsttlie Wire. The purpose of tlie'vbeadsn' is to providean easy bearing surface f'rwlie, 'Wire blanket or, more preferably, tocreate a joint between tbe curved upper surfacexof The decirle heads areoperated by means of adjusting screws 9. Water ie preferably and the'rolls hyineane of the hollow shaft of the deelde heads 7, which, Waterwill escape through the ports' 10 and may serve for' rinsing the jointand the opposite surface of the rolls. The deckie head should be medepeferably of a suitable noniusting material.

The tightening ledges 1l extend along the ii'olis from one end piece tothe other and border tightly on the 'saidend pieces Sfeeeured to thelongitladinal sheets 2, 'forming the joint 'for tightening the suctionroom against the atmosphere and also separate the single unitsof theeuetion-box.' The tightening ledges may be 'formed in a variety of Waysso as 'to adapt the saine to varying v eonditione. if the difference of.degree of vacuum loetweentwo unite of suction-box or between thesuction-rooms and atmosphere is very great, the tightening ledge ispreferably curved to conform to the .snifaee of the edj'ecentWire-suppoting rolls foithe of ei'eating e broad joint 'to pievent thepassage of ein `This modiiieetion is shown lay Figline li. l' thedifference of degiee of veenuni lseoife and behind the joint ie notrelatively greet, the tightening ledge may also be Stiaiglit andeven-surfaced against the rolls, shown by Figures 3 and 5. l; elseprefer this inodiieetion so es to pre "vent Contact between the carryingrolls and the opposite surface of the tightening ledge,

though the said'i'olls may sag somewhat in `the event the rolls 'eremade for Wide maeliinee. y

The surface ofc the tightening ledge, which is turned to the i'oll ispreferably ttecl with engr suitable non-instingi material '(iubber,metal, Wood and the like) oi' 'ie composed oi e etiip of tine meteiial,shown 'by Fignite lint the g'oint is not Wide enough, Water eennotrinse' through the joint, .end'pulp l will vetop it eeneing suelifrieten as to diseetiouely etard oi" stop the rolls. But also, if thejoint-is too Wide, air is drawn into the eviction @ooms mdv e largevacuum ereeting eppnnetne le ln eceeseiy so that the airdoee netinterfere with theeuctionand its successjnl epeeetion upon the paper inlthe Wire.

vlne bottoni pieces i2 :are arranged under end between the namee and thesheets 2 .end may be secured tothe trames and sheets by any convenientmeenseor example, ley eeen'e. The pipes ,13 nndli for i'emoifin'` wetenend ein efe preferably seperated and may. be connected with said botmmpiene..

of the Wire traoted 'Weten cannot drop into the enlienet pipe.Preferably/.the plete dips into the Watein with its longitudinal edges,which eine curved down, that it will forni' a channel wey to conduct theair out of Contact with 70- the dropping Water. The pipe- 13 for oon-'ducting the extiacted Water is arranged nndeiT and outside o' the bottompiece and may loe foicmed to act in that ease like a syplion 18. flllieoutside plate i9, which forms the 75* air exhaust pipe in connectionwith the het tom. piece, may loe strengthened against 4the atmosphericpressure by' tlie eti'eneie 20.

lf a vey higli'degi'ee of Vacuum is eniployed .in the lest unite ofsuetionbon, it "30 will canse ls'neli en atmosplietie pifees'nie-oagainst the Wire, that the trevelling "Wire sags deeply between theWiresupporting' rolls and it is desirable in this inetanee'to arrangesnppoiting /letlis 2l. ln orden tiiet 95 the fpi'esstnC-vl end.consequently the iietion i passing one? the suppozting lathe may hereduced to eininimuin, the nipper edges of seid enpportingletlie eineeiranged pieieienly under the level of the tog` 30 of the rolls. Theeiippoiting lathe are een ried by one oi more supports 2Q, Wliiell aremounted on the sheets 2 oi' on arme 23 se! cured on the-Sheets 2. Theseid lathe may be made of sneh a meteriel as is beet adept- 95 ed tosave the 'wire mesh blanket ttor enemple it may lie Wood, leather,i'uhlie or some relatively soft materiel.

lf e very high degree oj2 vacuum is i'equired in the last unitsofsuction-box ani90 other modification may be arranged behind the lastroll, which includes e suction-ibex 2li of common construct-ionconnected to, as shown, or sepeeted from the unit andiitted withWoodencovers:A corresponding .tothe le., present practice. in this easethe supporting lathe first mentioned are not necessary.

Any desired numberjof suction-boxes or unite of suction-boxes can hearranged upon one'paper-making machine or any desired -ll'iL4 number ofrolls in one boitier eieetually removingthe Water on, the web of paper;i

.The vemotion-bon neay be' .arranged with Wheels or carried laysanysuitable e,} pzii'atns to `facilitate removing when ollanging wire. 11i

Whatllelaimier .f 'i

1. A `suetiam'fnbzpompei, ingv supporting trames, sheets transverselyfzrenged'loetween lsaid frames, bottom pieceeexranged between seidirameeanel Sheets', Wine-supporting iolls *1% carried by seid` .'reinee,end .pieces mounted i v on seid frelmeeantl closing the e` ace betweenthe ends of seid rollsendisai iiemeeqloy leaving a iointpegeinettlieetljeeent sides of, all oi said iollfs,"'deelle head's arrangedto- 'L25slide `on said end pieces between seid rolls. near each endthereof fofadaptin the Working length of saidlooX to the Widt of @apen tbeing.inadeg tightening ledges resting on, N ,eeld. Sheet-s, ned extendingelong eeidenllf, Se@

,ezienie on said end I`'neces emi ieeving 2. jeini; :igaineg 'theadjeeen; eneee of die Wire suppoiing 'ciie, siii el eeici joins beingWide enough w be en@ iinee by watei buis nee;l enqngb (Le make difficultthe passage of ein l 2. A suctionebox comprising supporting "frames,sbees teneverseiy arranged between said frames, boiioin pieces arrangedbetween seid :z'amee and siieeze, Wiresupporting sind frames, endpieees,

relis carried b mounted on said 'ia'mes and ei-seing the space beweenthe eniis osaieif miie anti saiei frames by leaving' e joint against theeeijacena sides of eli of seid relis, iieekie beads amanged te siidie enseid end pieces between said miie near each enti thereof fois' adaptingthe working iengb of said box to the Width'ef paper being made,tightening leges Testing on Sei snees, extending aiong seid relis ioinone sicie to ibe other, boreied tigby en Sei end pieces and leaving e,joint against the mijaceni sni''ace of Wire-suppoi'ting miie, entipieces having vertcai Waiie Wbeiebjf tbe Wate for sealing and rinsingthe joints between seid end plee-ee and saici foils is zian'imednpbefore the ends of seid oiis.

3. fi eucienbex cempi'ising 'Suppoxng frames, shees t'ensvereeiyei'angeci betwee said frames, beom pieces :nrangec'i between said'frames ami sheets, 'Wireeuppeiring rolls carried by said frames, emi,pieces monni'eci on ,seifi ficanies and closing the space beween eheends of saifi foils miei Said frames by leaving e. jeini'. agains theadjacent Skies of ail of seid miie, decide beads arrange@ izo slide ensaid end pieces between said miie near each end thereof for aapting eheWerk 'mg length ci sai box the Wifieii of einer 1 u l being made,igi'itemng ledges resting; on said shees, exenfiing along sind miie imm`one side 'io the ciber, bodered tigbiy on said en pieces and ieeving ajoin egeine the adjaeenf; sui'eee ef wiie-sujiperting rolle, theeuxfaeee of igbiening le'ges and saifi end 'pieces edjeining me wire-Supperiing roiis being of e, nen-usiing me eliai. eueionben comprisingeupporing: frames7 shea e. izzene'eeiseiy be tween ames, beinn piecesarranged between seid infinies emi siieezze, wife-supporing' miieeeriefik-by iemee, emi pieces monn'e en fiemes and dosing; i ende ofsaid relis and miie, deekie e e en end. pieces be. tween'. Semi 'mile"wir Ci iieieof ffii"v edepiing Werl se,

the Width ef {ejse eg'ee nesting se said mils from one eide ite ieiedghtly on en@ ing n joint against the adjacent sui'fece of Wire-euppmtingTOUS, pipes 'foi' removinglr water and ain Said pipes being separatedfrom ens-n (ber, and combinedA with the bottom plaie7 the :iii' exhaustpipe being a1'- iunged pm'tiy inside amifipartiy outside of seid bettelnplate and having the upper in-l side end open, and. terminating abovethe ievei of the extracted Waiter, and the Water exhaust' pipe beingarranged outside of 'said bottom plate, anni having a syphon actiontherein. j 4

A suction-box Comprising supporting rznnes, sheets transverselyerrengefi between said frames, bottoni pieces ai'ranged between seidframes and sbeetea Wiresupporting relis carried bj1 saisi. iamee, entirpieces mounted on said zmnes and ciosing ti'ie space between the endsof saioi foils and said fi'aines by leaving a' joint against theadjacent sides of 'ali of seid rolls?, decide heads arianged to eide onseid end pieces 'between said relie neer each end thereof for adaptingthe Werking length of sei bex to the width of pepe? beingmedetigi1;ening ledges resizing en eei sbeeze, amending aiong said.foils Einem @ne eide to bile' einer bereoi, bezdereri tightly 0n. vanni'enfii pieces and leaving a joinl egeine; libe edjecen: sur

-face of Wire-su J @r-ine' Feile e inte beine L3 b arranged beve tbeinsife open end of en air exbeus; zincidiplping into he zweier with itsiengif'mcinai eciges, seid edges being curved fewnwei'ij7-c 'ferm e'channel wey io conduciiie ein one of Geniee/with drop ping Wael.

43. A suenen-bex eempmsmg Suppmting iframes, sheets t-mnsvenseiyeimng'ed beine/'een said frames, bottemp'ieees arranged beiween sani.frames anti ebeeie9 W1i'e-euppoing rolle carried; by said frames, piecesinounte on seid frames closing; ne space between eine e' maid miie and,Seidl Im-,mee by leaving e gein?. ble Mja/eene sides or ei ef saisireife; eieeiie beads errenged te slide en eei emi gieeee between seidrelis each emi i'ieree fee adapting @he Werk ini; .iengib ei bex te neWidth of peper being med@ 'igeening iegee 'estin en .ea-id 'abe-ebs,eezening eieni Seid y.relie inem one eide be iie Geber, befreefi enseifi eni. pieces @mi leaving e joint ageine fthe adg'nt sides @-2 Muisaid relis.J decle tightly "on said and pia'ces' and aavng a heads@imaged slide-0n said and pieces y.joufrz against the ajacenr, surfaceof Wwe zetween said ms nem @zich en@ thereof fof 'supper/ting rolls, andsa Suction box' arrange@ l@ adapting; h@ Working enggh of Sad box faobehind the last Wief-supportng rol] and Sine Wcfh o pape? oe'g" mae,tightening connected tigh'ly with he pSaid Sheets and ledges fasting onSaid shees, amending aeng tie said end pieces, said rofs from one sidethe othe, bordee MAX 'WENZEL

